Topics

1.EM-Is it a wave or a particle

• Wave
• Particle

2.Speed of Light
3.3 Different ways light is measured and why?

• Variable speed of light
• Effective speed of light
• Historicle speed of light

EM

Light was never dicovered as a particle or wave.Particle and wave both act in a different way.

Wave

Waves (mechanical waves) are a regular disturbance of some medium through which the wave travels and transfers energy.